I’ve just been playing in the Infinity Challenge Playlist and afte rmy game ended I have a message saying ’ the halo 4 servers are not available. Please try again later. Matchmaking has switched to using the default playlists.’
Sounds like you may be in a Fallback Hopper. Here’s more info about Fallback Hoppers:
Sometimes I get a message saying, “Halo 4 Servers unavailable” and see a different set of playlists. My SR also gets set back to 0. Why does this happen?
What you are seeing are “fallback hoppers”. When you enter this mode, you will see a UI notification. It shows up on the “Find Game” screen for War Games. In previous Halo titles, you’re dependent on the servers to get the information you needed for Matchmaking, and if they go down, you can’t play. Fallback hoppers are a new functionality for Halo 4, and they allow people to continue playing Halo 4 when there are server issues.
In order to preserve the integrity of the online experience, there are some limitations to this functionality:
Reduced XP earn rate, counted as offline XP
Players in the fallback hopper cannot play with those that are using the regular server hoppers
Player customization is disabled (no armor, loadouts, emblem)
Since the server isn’t actually available in fallback hopper mode, you’ll be missing functionality that the server provides. This includes:
Spartan Ops
File Share
Service Record
Commendations
Challenges
Double XP tokens
You will automatically be switched to fallback hoppers if you fail to download a necessary file. You’ll remain in fallback hoppers for up to 10 minutes after the services return. When in this mode, it’s a good idea to relaunch the game on a regular basis, so you can reenter the regular hoppers as soon as they’re available.